[ 1664.147183][T20556] gre: GRE over IPv4 demultiplexer driver
[ 1664.690565][T20579] ip_gre: GRE over IPv4 tunneling driver
[ 1672.647436][T20925] ping (20925) used greatest stack depth: 23888 bytes left
[ 1681.281383][T21150] ip6_gre: GRE over IPv6 tunneling driver
[ 1686.009106][T21349] ping (21349) used greatest stack depth: 23664 bytes left
[ 1687.264178][T21406] ping (21406) used greatest stack depth: 23072 bytes left
[ 1692.317831][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1694.365785][    C2] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1696.284810][    C1] ip6_tunnel: tep0 xmit: Local address not yet configured!
[ 1698.332780][    C0] ip6_tunnel: tep0 xmit: Local address not yet configured!